Grant realized what the advantages of the Federal government were and used them. This isn't vision, it's using your advantages instead of wasting them. It doesn't take vision to know that when you can more readily afford to replace your troops and equipment than your enemy can that you can afford to throw your troops a the enemy in order to wear him down as long as you keep the pressure up. This is not saying Grant was an idiot. It's simply saying he wasn't looking far in advance as a visonary would. He was concentrating on the here and now.